Pinpoint Test RJ: REDUCTANT Tank Level
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
Refer to Wiring Diagrams ELECTRONIC ENGINE CONTROLS - 3.0L DIESEL for schematic and connector information.
Normal Operation and Fault Conditions
Refer to the DTC Fault Trigger Conditions.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| PCM P203B:00 | Reductant Level Sensor "A" Circuit Range/Performance: No Sub Type Information | Sets when the PCM detects an irrational reading from the reductant level sensor, such as a reductant level greater than the reductant tank capacity. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the IPC message center. |
| PCM P206B:00 | Reductant Quality Sensor Range/Performance: No Sub Type Information | Sets when the PCM detects the reductant quality module sensor circuits are operating outside of an expected range for a calibrated amount of time. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle, while carrying out the appropriate drive cycle procedure, until the system warning message has cleared from the IPC message center. Refer to Drive Cycles for additional information. |
| PCM P206C:00 | Reductant Quality Sensor Low: No Sub Type Information | Sets when the PCM detects the actual reductant quality module signal is less than the expected value for a calibrated amount of time. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle, while carrying out the appropriate drive cycle procedure, until the system warning message has cleared from the IPC message center. Refer to Drive Cycles for additional information. |
| PCM P206D:00 | Reductant Quality Sensor High: No Sub Type Information | Sets when the PCM detects the actual quality module signal is greater than the expected value for a calibrated amount of time. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle, while carrying out the appropriate drive cycle procedure, until the system warning message has cleared from the IPC message center. Refer to Drive Cycles for additional information. |
| PCM P21CD:00 | Reductant Quality Module Supply Voltage Low: No Sub Type Information | Sets when the PCM detects the reductant quality module detects an under voltage condition. |
| PCM U02A2:00 | Lost Communication with Reductant Quality Module: No Sub Type Information | Sets when the PCM does not receive the reductant level sensor message within the defined amount of time. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the IPC message center. |
Possible Sources
- Low reductant fluid level
- Reductant level sensor circuitry concern
- Reductant quality module
- Reductant level sensor
- PCM (12A650)